Pre-twisted anti-vibration hammer pre-twisted wire winding hook

Abstract

The present invention provides a pre-twisted wire winding hook for a pre-twisted anti-vibration hammer, comprising a cylindrical main hook arm, an end hook provided at the upper end of the main hook arm, the end hook comprising an end hook arc segment and an end hook straight segment, the end hook straight segment being parallel to the main hook arm, one end of the end hook straight segment being connected to the upper end of the main hook arm via the end hook arc segment, the end hook straight segment, the end hook arc segment and the main hook arm forming a U-shaped structure in the same plane, an arc-shaped reverse hook segment provided at one end of the end hook straight segment away from the end hook arc segment, the angle between the plane where the end hook straight segment, the end hook arc segment and the main hook arm are located and the plane where the reverse hook segment is located is α, 45°≤α≤85°. The beneficial effect of the present invention is that due to the adoption of the above technical solution, the pre-twisted wire can be wound onto the conductor without the operator touching the conductor, thereby effectively improving the convenience of installing the anti-vibration hammer, with a simple structure, low cost, and safe and convenient operation.

Description

Technical Field

[0001] The invention relates to the technical field of electric power equipment, in particular to a pre-twisted wire winding hook used in the installation process of an anti-vibration hammer on a transmission line. Background Art

[0002] On high-voltage overhead lines, small hammers, called anti-vibration hammers, are often hung on the conductors near the insulators on either side. These hammers are designed to reduce wind-induced vibrations in the conductors. High-voltage overhead lines are located on high poles with large spans, causing the conductors to vibrate when subjected to wind. When the conductors vibrate, the working conditions at the point where they are suspended are most unfavorable. Repeated vibrations can cause fatigue damage to the conductors due to periodic bending.

[0003] There are two ways to fix the anti-vibration hammer and the conductor: bolt type and pre-twisted type. Among them, the pre-twisted type is more basic and commonly used. Figure 1 As shown, the pre-twisted anti-vibration hammer consists of two hammer heads, one large and one small, connected by a connecting rod. A hammer hook is located in the middle of the connecting rod, which grips the conductor. Multiple pre-twisted wire protrusions are spaced apart on the outside of the hammer hook. The anti-vibration hammer is connected to the conductor via pre-twisted wires, which are prefabricated, spiral-shaped metal rods with a certain degree of elasticity. Installation involves first hooking the guide wire with the hammer hook, then inserting the pre-twisted wire between the pre-twisted wire protrusions, and finally wrapping the two ends of the pre-twisted wire around the outside of the conductor. Multiple pre-twisted wires effectively connect the anti-vibration hammer to the conductor.

[0004] During the initial stage of line installation, when the conductors are not energized, operators can manually install the anti-vibration hammers. However, during line operation, the anti-vibration hammers may become damaged or slip from their mounting position due to factors such as vibration, necessitating reinstallation. However, at this point, the conductors are energized, and de-energizing them is costly, necessitating live installation in many cases. Live installation requires operators to use non-conductive devices such as insulating rods to install the anti-vibration hammers on the ground or on transmission towers without contacting the conductors.

[0005] In some existing technologies, in order to facilitate the installation of the anti-vibration hammer, the structure of the hammer hook is changed, and a pre-twisted wire fixing device is established on the hammer hook to pre-fix the pre-twisted wire on the hammer hook of the anti-vibration hammer. For example, a plurality of through holes passing through both sides of the hammer hook are arranged at intervals on the hammer hook, and the pre-twisted wire is inserted into the through holes, and then the two are sent to a high altitude together. After the hammer hook hooks the wire, the hammer hook is tightened downward with an insulating rod to temporarily fix the anti-vibration hammer on the hammer hook, and then the pre-twisted wire is wrapped around the wire through the insulating rod.

[0006] However, it is difficult to wind the pre-twisted wire without the operator touching the wire. Figure 2As shown, in some existing technologies, an insulating rod with an "R"-shaped hook at the end is used for installation. The insulating rod with the "R"-shaped hook can drive the pre-twisted wire to move forward and backward in the axial direction of the insulating rod, but in order to drive the pre-twisted wire to rotate circumferentially around the conductor, it is necessary to constantly adjust the angle and position of the insulating rod, which is very inconvenient to operate. Summary of the Invention

[0007] The purpose of the present invention is to provide a pre-twisted wire winding hook for a vibration-proof hammer, which is used to wind the pre-twisted wire arranged on one side of the conductor onto the conductor along the spiral curvature of the pre-twisted wire itself through an insulating rod on the ground or on a power supply tower without the operator touching the conductor. The hook has the characteristics of simple structure, low cost, safe and convenient operation.

[0008] The technical solution of the present invention is:

[0009] The pre-twisted anti-vibration hammer pre-twisted wire winding hook of the present invention is used in the process of installing the pre-twisted wire anti-vibration hammer on the guide wire. The pre-procedure of this process includes the fixing process of the pre-twisted wire and the anti-vibration hammer hook, and the temporary fixing of the anti-vibration hammer with the pre-twisted wire and the conductor.

[0010] There are many ways to fix the pre-twisted wire and the anti-vibration hammer hook, including welding, or setting multiple through holes on the hammer hook at intervals and passing through both sides of the hammer hook, inserting the pre-twisted wire into the through holes, etc., all of which can achieve the fixation of the pre-twisted wire and the anti-vibration hammer hook.

[0011] To achieve the temporary fixation process of the pre-twisted wire anti-vibration hammer and the conductor, after the anti-vibration hammer hook with the twisted wire hooks the conductor, a downward pulling force is applied to the anti-vibration hammer through the insulating rod to achieve the purpose of temporarily fixing the anti-vibration hammer.

[0012] After the anti-vibration hammer is temporarily fixed to the conductor, the pre-twisted wire on the anti-vibration hammer is located on one side of the conductor, and the pre-twisted wire is wound onto the conductor by the pre-twisted anti-vibration hammer pre-twisted wire winding hook of the present invention. The pre-twisted wire winding action mainly involves the pre-twisted wire rotating circumferentially around the conductor.

[0013] A pre-twisted anti-vibration hammer pre-twisted wire winding hook comprises a cylindrical main hook arm, an end hook is provided at the upper end of the main hook arm, the end hook comprises an end hook arc section and an end hook straight section, the end hook straight section is parallel to the main hook arm, one end of the end hook straight section is connected to the upper end of the main hook arm through the end hook arc section, the end hook straight section, the end hook arc section and the main hook arm form a U-shaped structure in the same plane, the end of the end hook straight section away from the end of the end hook arc section is provided with an arc-shaped reverse hook section, the angle between the plane where the end hook straight section, the end hook arc section and the main hook arm are located and the plane where the reverse hook section is located is α, 45°≤α≤85°, a support arm is provided at the connection between the end hook arc section and the end of the main hook arm, the support arm, the end hook arc section and the main hook arm form a Y-shaped structure.

[0014] To facilitate explanation of the working process of the present invention, taking the example of clockwise winding of a pre-twisted wire around a conductor, four endpoints can be selected on the approximately circular trajectory of the pre-twisted wire around the conductor, namely, the upper, lower, left, and right endpoints, which evenly divide the trajectory of the pre-twisted wire around the conductor. The process of the pre-twisted wire moving from the upper endpoint, through the right endpoint, to the lower endpoint requires a downward pulling force to be applied to the pre-twisted wire, while the process of the pre-twisted wire moving from the lower endpoint, through the left endpoint, to the upper endpoint requires an upward pushing force to be applied to the pre-twisted wire.

[0015] The U-shaped structure at the upper end of the main hook arm opens downward, and is mainly used to move the pre-twisted wire from the upper end point through the right end point to the lower end point. The U-shaped structure hooks the pre-twisted wire and applies downward force.

[0016] After passing the lower endpoint, the force direction of the pre-twisted wire needs to be changed from being pulled downward to being pushed upward. In the prior art, taking the "R"-shaped hook as an example, the way to change this force direction is to remove the pre-twisted wire from the hook that is pulled downward, and then push it upward through the Y-shaped structure. In the present invention, after reaching the lowest point, the main hook arm is rotated by an angle α so that the plane where the reverse hook segment is located is perpendicular to the pre-twisted wire, and the straight segment of the end hook is pushed upward against the pre-twisted wire. The pre-twisted wire falls into the reverse hook segment, is supported by the reverse hook segment, and is pushed upward, thereby realizing the process of the pre-twisted wire moving from the lower endpoint segment to the left endpoint to the upper endpoint.

[0017] The angle setting between the plane where the end hook straight section, the end hook arc section and the main hook arm are located and the plane where the reverse hook section is located can allow the pre-twisted wire to freely enter and exit the U-shaped structure by rotating the main hook arm, and can also be hung by the reverse hook section, which simplifies the action process of winding the hook when the force direction of the pre-twisted wire changes. For pre-twisted wires with a diameter of less than 1 cm in the air, the effect is very meaningful.

[0018] The number of pre-twisted wires in a pre-twisted anti-vibration hammer is usually 2-4, and there will be some entanglement between the pre-twisted wires. Using the support arm, the end hook arc section and the main hook arm to form a Y-shaped structure can easily sort out the entanglement between the pre-twisted wires and easily sort out a single pre-twisted wire for winding.

[0019] An arc-shaped winding arm is provided in the middle of the main hook arm, one end of the winding arm is connected to the middle of the main hook arm, and the other end of the winding arm is bent downward and provided with an end hook.

[0020] At the upper end point, when the pre-twisted wire crosses the upper end point from the left to the right, the operator needs to move slightly to the left below the vertical direction of the conductor, and push the pre-twisted wire across the upper end point to the right side of the upper end point. The operator also needs to move to the right side below the vertical direction of the conductor so that the U-shaped structure can hook the pre-twisted wire and pull it down. However, if the operator is far away from the conductor, or the operator cannot move flexibly on the transmission tower, this operation will be very difficult.

[0021] The winding arm of the present invention is semicircular in shape, with a diameter 5-20 times the diameter of the conductor. On the left side of the upper end point, the pre-twisted wire is removed from the end hook at the end of the main hook arm and replaced in the end hook of the winding arm. The end hook of the winding arm drives the pre-twisted wire to move from the left side of the upper end point to the right side of the upper end point.

[0022] Specifically, the end hook of the winding arm has a U-shaped structure with an upward opening and a reverse hook section with a downward opening. On the left side of the upper end point, the pre-twisted wire is pushed upward with the bottom of the U-shaped structure, and the pre-twisted wire is moved to the right side of the upper end point by relying on the span of the winding arm. After passing the upper end point, the main hook arm is rotated so that the plane where the reverse hook section is located is perpendicular to the pre-twisted wire, so that the pre-twisted wire slides into the reverse hook section and is then pulled downward. Through the above solution, the pre-twisted wire can easily pass through the upper end point of its movement trajectory, thereby improving the convenience of operation.

[0023] A hook seat is provided at the lower end of the main hook arm, and an end of the hook seat away from the main hook arm is provided with an external thread.

[0024] During the installation of the anti-vibration hammer, insulating rods of various structures are involved. The hook seat and the insulating rod are threadedly connected, so that one insulating rod can be matched with joints of various structures to achieve diversified functions of the insulating rod.

[0025] A limiting pin hole is provided in the radial direction of the hook seat.

[0026] In the present invention, the action of rotating the main hook arm is involved, and the insulating rod and the hook seat are threadedly connected, which has a certain probability of loosening. The limit pin can be used to stably connect the hook seat and the insulating rod.

[0027] The end of the reverse hook section is provided with a rounded corner.

[0028] The rounded corner setting makes the pre-twisted wire enter and exit the end hook more smoothly.

[0029] The advantages and positive effects of the present invention are: due to the adoption of the above technical solution, the pre-twisted wire can be wound onto the conductor without the operator touching the conductor, which effectively improves the convenience of installing the anti-vibration hammer, has a simple structure, low cost, and is safe and convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the connection between the pre-twisted anti-vibration hammer and the wire

[0031] Figure 2 This is a schematic diagram of the structural principle of the "r" shaped hook in the prior art

[0032] Figure 3 This is a schematic diagram of the structural principle of the present invention

[0033] Figure 4 It is a top view schematic diagram of the present invention

[0034] Figure 5 This is a schematic diagram of the trajectory of the pre-twisted wire wrapped around the conductor.

[0035] Figure 6 This is a schematic diagram of the connection between the present invention and the pre-twisted wire between the left end point and the upper end point.

[0036] Figure 7 Schematic diagram of the connection between the invention and the pre-twisted wire at the upper end point

[0037] Figure 8 This is a schematic diagram of the connection between the present invention and the pre-twisted wire between the upper end point and the right end point.

[0038] Figure 9 This is a schematic diagram of the connection between the present invention and the pre-twisted wire at the right end point

[0039] Figure 10 This is a schematic diagram of the connection between the present invention and the pre-twisted wire between the right end point and the lower end point.

[0040] Figure 11 This is a schematic diagram of the connection between the present invention and the pre-twisted wire at the lower end point.

[0041] Figure 12 This is a schematic diagram of the connection between the present invention and the pre-twisted wire between the lower end point and the left end point.

[0042] Figure 13 This is a schematic diagram of the connection between the present invention and the pre-twisted wire at the left end point

[0043] In the picture:

[0044] 1. Anti-vibration hammer 2. Conductor 3. Pre-twisted wire

[0045] 4. Main hook arm 5. End hook 6. Support arm

[0046] 51. End hook arc segment 52. End hook straight segment 53. Reverse hook segment

[0047] 91, upper endpoint 92, right endpoint 93, lower endpoint

[0048] 94. Left endpoint DETAILED DESCRIPTION

[0049] like Figure 3 、 4 As shown, the present invention:

[0050] A pre-twisted anti-vibration hammer pre-twisted wire winding hook comprises a cylindrical main hook arm 4, an end hook 5 is provided at the upper end of the main hook arm, the end hook comprises an end hook arc segment 51 and an end hook straight segment 52, the end hook straight segment 52 is parallel to the main hook arm 4, one end of the end hook straight segment 52 is connected to the upper end of the main hook arm through the end hook arc segment 51, the end hook straight segment 52, the end hook arc segment 51 and the main hook arm 4 form a U-shaped structure in the same plane, the end of the end hook straight segment away from the end of the end hook arc segment is provided with an arc-shaped reverse hook segment 53, the angle between the plane where the end hook straight segment 52, the end hook arc segment 51 and the main hook arm 4 is located and the plane where the reverse hook segment 53 is located is α, α=45°, a support arm 6 is provided at the connection between the end hook arc segment and the end of the main hook arm, the support arm 6, the end hook arc segment 51 and the main hook arm 4 form a Y-shaped structure.

[0051] An arc-shaped winding arm is provided in the middle of the main hook arm, one end of the winding arm is connected to the middle of the main hook arm, and the other end of the winding arm is bent downward and provided with an end hook 5.

[0052] A hook seat is provided at the lower end of the main hook arm, and an end of the hook seat away from the main hook arm is provided with an external thread.

[0053] A limiting pin hole is provided in the radial direction of the hook seat.

[0054] The end of the reverse hook section is provided with a rounded corner.

[0055] The working process of this example:

[0056] When in use, the hook seat and the insulating rod are threadedly connected, and a limit pin is inserted into the limit pin hole for circumferential limiting. With the conductor as the center of the circle, the pre-twisted wire is wound around the conductor in a trajectory that is approximately circular.

[0057] like Figure 5-13 As shown,

[0058] When the pre-twisted wire is between the upper end point 91 and the right end point 92, use the end hook on the main hook arm to hook the pre-twisted wire and pull it downward until the pre-twisted wire passes the right end point and reaches and slightly passes the lower end point 93. Rotate the main hook arm at an angle α so that the plane where the reverse hook section is located is perpendicular to the pre-twisted wire, push the insulating rod upward, so that the reverse hook section supports the pre-twisted wire and moves it upward past the left end point 94 to the left side of the upper end point, close to the upper end point.

[0059] Then remove the pre-twisted wire from the end hook of the main hook arm, and use the end hook of the winding arm to hold the pre-twisted wire and push it to the upper right so that the pre-twisted wire crosses the upper end point. After that, rotate the main hook arm at an angle α so that the plane where the reverse hook section is located is perpendicular to the pre-twisted wire, and pull the insulating rod downward so that the reverse hook section hooks the pre-twisted wire and moves it down between the upper end point and the right end point.

[0060] The above is a detailed description of an embodiment of the present invention. However, the content described is only a preferred embodiment of the present invention and should not be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A pre-twisted wire winding hook for a vibration-proof hammer, characterized by: The hook arm is connected to the main hook arm through the arc section, and the other end of the winding arm is bent downwards and provided with an end hook.

2. The pre-twisted anti-vibration hammer pre-twisted wire winding hook according to claim 1, characterized in that: A hook seat is provided at the lower end of the main hook arm, and an end of the hook seat away from the main hook arm is provided with an external thread.

3. The pre-twisted wire winding hook for anti-vibration hammer according to claim 2, characterized in that: A limiting pin hole is provided in the radial direction of the hook seat.

4. The pre-twisted wire winding hook for anti-vibration hammer according to claim 1, characterized in that: The end of the reverse hook section is provided with a rounded corner.

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